Operation CHARM: Car repair manuals for everyone.

Pressure Testing





WARNING:
^ Removing the radiator cap or the coolant filler cap while the engine is running, or when the engine and radiator are hot is dangerous. Scalding coolant and steam may shoot out and cause serious injury. It can also damage the engine and cooling system.
^ Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes.
^ When you're sure all the pressure is gone, press down on the cap-still using a cloth-turn it, and remove it
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1. Verify that the coolant level in the radiator reservoir is between the FULL and LOW marks
2. Add coolant if necessary

NOTE: The distance between the FULL and LOW marks on the radiator reservoir represents 0.4 L (0.4 US quart).

3. Remove the radiator cap.
4. Connect a radiator tester and the Special Service Tool (SST) to the radiator filler neck.
5. Apply 123 kPa (17.8 psi) of pressure to the system.


CAUTION: Applying more than 123 kPa (17.8 psi) can damage the hoses, fittings, and other components, and cause leaks.

6. Verify that the pressure is held. If not, check for coolant leakage.